Glossary of Terms

Enter a term in the text box and press Find.
For a list of terms, select a letter or enter starting letter(s).

A B C D E F G H I K L M N O P R S T U V W X Y [All

Enter term:    
 
varicose veins
When veins, typically in the legs, become less elastic and the one-way valves that normally prevent blood from flowing backward malfunction, blood pools in the vessels resulting in varicose or enlarged and knotty veins.